GB191015721A - Improvements in Typewriting Machines. - Google Patents

Abstract

15,721. Fell, J. C., [Union Typewriter Co.]. June 30. Tabulating - mechanism. - The column stops, instead of being adjustable along the stop-bar, occupy fixed positions, preferably a complete series corresponding to all the letter-space positions of the carriage, and are movable into and out of operative position, and means, preferably controlled by a key located in the keyboard of the machine, is provided for setting the stops as the carriage reaches the successive positions during the writing of the first line of the matter to be tabulated. Provision is also made for returning all the projected stops when a different setting is required. (1.) Figs. 2 and 7 show stops 8 forked to straddle the usual toothed stop-bar 6. The stops are held in positinn by the action of a projection 14 on a U-shaped spring 12 on the stop against the crown of the adjacent tooth on the stop-bar, and removal is prevented by means of a projection 9 on the stop and a locking- bar 10 screwed to the stop-bar; or, the projection on the U-shaped spring is provided with inclined or cam faces for engagement with the corner of and a recess in the stopbar in the returned and projected positions respectively, and the upper limb of the spring is provided with a shoulder for engagement with the adjacent tooth to prevent removal. To project the stops, an arm 28 is provided on a rock-shaft 30 actuated from a key preferably located in the keyboard of the machine; the arm 28 is shown as disposed to project the stops just to the right of the decimal stop of a series of denomination stops 15. To return the stops, a finger-piece 60 is depressed to project a cam 40 into the path of the stops, and the movement of the carriage in either direction brings the stops into engagement with either face 41 of the cam. The cam is provided with a cylindrical bearing-piece 42 secured in a casting 47 on the tabulator frame 18 by a screw 48 extending into a recess 44. The finger-piece is fitted on a spring-returned plunger 51 provided with an incline 56 for cooperation with a groove in the part 42. Flat faces on the parts 42, 51 engage to prevent rotation, and vertical faces 65 engage, when the finger-piece is fully depressed, to prevent rearward movement of the cam. To prevent undue strain on the stop-bar during the return of the stops, an abutment 70 on a bracket 67 is disposed just clear of the locking-bar 10. (2.) Fig. 9 shows stops 76 mounted in slots in a hollow stop-bar 77 and retained by bow springs. Each stop is formed with a central opening to receive an eccentric bar 81, which is rotated by means of a finger-piece 80, against the action of a spring 83, to return the projected stops, and serves to limit the advance of the projected stops.